Diving Overview
Thailand is one of the most popular diving destinations in Asia, combining affordable training with spectacular marine life. The Andaman Sea features dramatic underwater topography, manta rays and whale sharks, while the Gulf of Thailand offers gentle conditions perfect for learning. Over 700 dive operators serve divers across 1,430 islands.
Water Temperature
Visibility
Dive Depth
Best SeasonPopular Dive Spots
Similan Islands
Koh Tao
Richelieu Rock
Phuket
Koh Phi Phi
Koh Lanta
Hin Daeng & Hin Muang
Koh Lipe
Koh Phangan
Koh Chang
Best Diving Months
Andaman Season (Nov-Apr)Excellent
Gulf Season (Year-round)Good
Monsoon (Andaman) (May-Oct)Moderate
Marine Biodiversity
1,000+ fish species
500+ coral species
Manta rays, whale sharks
Leopard sharks, seahorses
9 shark species recorded
Local Transport
Domestic flights (Thai Airways, AirAsia)
Ferries & speedboats
Buses & minivans
Grab / taxis
Longtail boats
Rental motorbikes
Getting There
Suvarnabhumi Airport (BKK) - Main Bangkok international gateway
Don Mueang Airport (DMK) - Bangkok budget airlines hub (AirAsia)
Phuket International Airport (HKT) - For Andaman Sea dive sites
Koh Samui Airport (USM) - For Gulf islands — Koh Tao, Koh Phangan
Emergency Services
Diving Emergency
+66-81-081-9000
(SSS Phuket Hyperbaric Chamber (24/7))
+66-81-081-9555
(SSS Koh Samui Chamber (24/7))
+66-81-081-9777
(SSS Koh Tao Evacuation Center)
+1-919-684-9111
(DAN International 24/7)
Top 10 Popular
Similan Islands Snorkelling Tour — Similan Islands
Similan Islands, Thailand
4 Hours
4.7 (872)
US$ 44.80
Similan Islands Fun Dive Package — Similan Islands
Similan Islands, Thailand
4 Hours
4.7 (584)
US$ 44.80
Similan Islands Sunset Cruise II — Similan Islands
Similan Islands, Thailand
3 Hours
4.5 (368)
US$ 32.00
